Mimoides thymbraeus, the white-crescent swallowtail, is a species of butterfly in the family Papilionidae.

[3] P. thymbraeus has small spots on head and breast grey-yellow, often slightly reddish.

Upperside of the wings slightly but yet distinctly metallic blue or green; forewing without markings, but with white fringes; hindwing with a slender tail and 1 or 2 rows of spots between cell and margin.

Pupa green, as in the allied species, appearing constricted at the base of the abdomen.

The butterfly flies in the open country the whole year through, and is rather common at a height of 500 to 1560 m. —thymbraeus Boisd.